BDA Radiography Questions and Answers Already Passed

BDA Radiography Questions and Answers Already Passed What is the purpose of a dosimeter in radiology? To measure the radiation exposure received by personnel during procedures. What does the term "radiopaque" mean in radiographic imaging? It describes materials that block X-rays and appear white or light on the image. What does the inverse square law describe in radiology? The intensity of radiation decreases as the distance from the source increases. What is the effect of using a higher kVp on image contrast? It decreases image contrast, making the image appear more uniform. What is the role of a control panel in radiography? To allow the technologist to adjust the exposure settings, such as kVp and mAs. 2 What is the purpose of using a filter in the X-ray tube? To remove low-energy X-rays that contribute to patient exposure without improving the image quality. What is the significance of the grid ratio in radiography? A higher grid ratio improves the reduction of scatter radiation, enhancing image contrast. What does the term "dynamic range" refer to in digital radiography? The range of exposure values that can be captured and still produce an acceptable image quality. What is the effect of using a smaller focal spot size in radiography? It improves image sharpness and detail but may reduce the amount of X-ray power. What is the primary role of the radiologic technologist in a radiographic procedure? To position the patient and operate the equipment to produce diagnostic images. How does increasing the kVp affect the X-ray beam? 3 It increases the energy and penetration of the X-ray beam. What is the function of the X-ray grid in radiographic imaging? It reduces scatter radiation to improve image quality. What is the purpose of a radiographic film's emulsion layer? To contain the silver halide crystals that are sensitive to light or radiation. What does the term "radiolucent" refer to in radiography? It describes materials that allow X-rays to pass through and appear dark on the image. How does increasing the mAs (milliampere-seconds) affect the image? It increases the quantity of X-rays produced, resulting in higher image density. What does the term "contrast" refer to in radiography? The difference in density between different areas of the image. What is the primary function of a fluoroscope in radiology? 4 To provide real-time, continuous imaging of internal structures. How does increasing the source-to-image distance (SID) affect radiographic images? It reduces image magnification and increases sharpness.